Junior Systems Engineer

The Amatriot Group

. Administer and support Linux systems in production environments .

Posted 9/24/2026full-timeQuantico • Virginia • United StatesJunior💰 $65,000 - $72,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and supporting Linux systems, particularly Ubuntu, in production environments. Proficient in troubleshooting complex infrastructure issues and implementing system security fundamentals while effectively documenting processes and configurations.

Highest-signal resume keywords

Linux System AdministrationUbuntu Linux SupportInfrastructure TroubleshootingTCP/IP NetworkingSystem Security Fundamentals

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Linux Command LineShell UtilitiesMonitoring and LoggingPatch ManagementAccess ControlsVulnerability RemediationBash ScriptingInfrastructure as CodeCloud Environment AdministrationContainerization

Soft Skills

Clear Documentation

Tools & Technologies

DockerAnsibleTerraformAWSNginxGrafanaELK

Certifications & Qualifications

Active TS Security Clearance

Industry Keywords

Virtualized EnvironmentsHigh-Availability InfrastructureLoad BalancingScalable InfrastructureCI/CD Concepts

Tech Stack

Tools & technologies

AnsibleAWSCloudDNSDockerFirewallsGrafanaLinuxNGINXPythonTCP/IPTerraformTypeScript

About the role

Key responsibilities & impact

Administer and support Linux systems in production environments
Support Ubuntu Linux environments
Apply Linux system administration concepts to maintain reliable system operations
Use the Linux command line and common shell utilities for administration and troubleshooting
Troubleshoot complex infrastructure issues across operating systems
Administer and troubleshoot servers in virtualized or cloud environments
Support monitoring, logging, alerting, and diagnosis of system health and performance issues
Apply working knowledge of TCP/IP networking, DNS, DHCP, HTTP/HTTPS, SSH, routing, firewalls, and network troubleshooting tools
Support system security fundamentals, including patch management, access controls, SSH security, and vulnerability remediation
Document infrastructure, configurations, troubleshooting procedures, and operational processes clearly

Requirements

What you’ll need

Active TS or higher security clearance required
3+ years of experience administering and supporting Linux systems in production environments
Strong hands-on experience with Ubuntu Linux
Experience troubleshooting complex infrastructure issues across operating systems
Experience administering and troubleshooting servers in virtualized or cloud environments
Experience with monitoring, logging, alerting, and diagnosing system health and performance issues
Solid understanding of Linux system administration concepts
Proficiency with the Linux command line and common shell utilities
Working knowledge of TCP/IP networking, DNS, DHCP, HTTP/HTTPS, SSH, routing, firewalls, and common network troubleshooting tools
Understanding of system security fundamentals, including patch management, access controls, SSH security, and vulnerability remediation
Ability to document infrastructure, configurations, troubleshooting procedures, and operational processes clearly
Preferred: experience with Docker and containerized applications
Preferred: experience with Ansible or other configuration-management and automation tools
Preferred: experience writing Bash or other shell scripts for system administration and automation
Preferred: experience with infrastructure-as-code tools such as Terraform
Preferred: familiarity with CI/CD concepts and tools
Preferred: experience with cloud platforms such as AWS
Preferred: experience administering web servers, reverse proxies, or application infrastructure such as Nginx
Preferred: familiarity with databases and troubleshooting application/database connectivity
Preferred: familiarity with centralized logging and monitoring platforms such as Grafana and ELK
Preferred: experience with scripting or automation using Python
Preferred: exposure to high-availability, load balancing, and scalable infrastructure concepts